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24 个结果
  • 简介:这份报纸为它考虑随机的线性二次的规定(LQR)问题吗?有多重输入控制器的随机的系统。明确的控制器被介绍一个以二个Riccati方程给新有肋骨并且建立在状态之间的同类的关系并且新有肋骨。更重要地,比那由扩大技术发源的为导出的Riccati方程节省是更多的计算的。

  • 标签: 随机系统 多输入 LQ问题 RICCATI方程 求解 线性二次型
  • 简介:在图象之间的颜色转移有效地使用图象的统计信息。我们在场在图象之间的地方色彩转移的一条新奇途径基于简单统计并且局部地线性的嵌入。一个勾略的接口被建议为快速并且容易指定在目标和来源图象之间的颜色通讯。当顺利保存边界时,用户能用抄写员指定本地区域的通讯,它更精确地把目标颜色转移到来源图象,并且展出更自然的产量结果。我们的算法没被限制为一对一的图象颜色转移并且能使用超过一幅目标图象在来源图象在不同区域转移颜色。而且,我们的算法不要求选择在来源和目标图象之间的一样的颜色风格和图象尺寸。我们建议亚采样减少计算负担。与另外的途径作比较,我们的算法在掺输入数据的颜色是好一些的。我们的途径在来源图象保存另外的颜色细节。各种各样的试验性的结果证明我们的途径在来源和目标图象指定地方色彩区域的通讯。并且它表示用户的意愿并且产生视觉效果的更实际、自然的结果。

  • 标签: 柔韧的颜色相配 渲染风格转移 局部地线性的嵌入 编辑繁殖 亚采样 想象处理
  • 简介:社会风险分类是为社会风险感觉的一个基本、复杂的问题。进行社会风险分类,Tianya论坛帖子作为数据来源,和四种代表被选择:字符串表示,术语频率表示,TF-IDF表示和BBS帖子的分布式的表示被使用。用作为距离度量标准编辑距离或余弦类似,四个k近邻居(kNN)分类器基于不同代表被开发并且比较。由于词顺序的优先级和神经网络模型段向量的语义抽取,kNN为社会风险分类由段向量(kNN-PV)表演有效性基于分布式的表示产生了。而且,通过不同重量,kNN-PV作为一个整体模型与另外的三个kNN分类器被相结合改进社会风险分类的表演。通过蛮力格子搜索方法,最佳的重量被分到不同kNN分类器。与kNN-PV相比,试验性的结果表明整体方法的Macro-F显著地为社会风险分类被改进。

  • 标签: KNN算法 分类器集成 社会风险 风险分类 神经网络模型 FORUM
  • 简介:Threetyphoons,Goni,MorakotandEtauwhichweregeneratedinWesternPacificin2009,aresuccessfullysimulatedbytheWRFmodel.Thehorizontalandverticalvorticityandtheirinteractionareanalyzedanddiagnosedbyusingthesimulationresults.Itisshownthattheirresultantvectorshadafixedpatternintheevolutionprocessofthethreetyphoons:Thehorizontalvorticityconvergedtothetropicalcyclone(TC)centerbelow900hPalevel,flowedoutfromitataround900to800hPa,andflowedinbetween800hPaand700hPa.Ifmultiplemaximumwindspeedcentersshowedup,thehorizontalvorticityconvergedtothecenterofthetyphoonbelowthemaximumwindspeedcenteranddivergedfromtheTCcenterabovethemaximumwindspeedcenter.Atlowlevels,thethreetyphoonsinteractedwitheachotherthroughverticalcirculationgeneratedbythevortextube.Thiscirculationwasmainlygeneratedbytheeastwardorwestwardhorizontalvorticityvectors.Cloudsandprecipitationweregeneratedontheascendingbranchoftheverticalcirculation.ThevortextubesoftenflowedtowardthesouthwestoftherightTCfromthenortheastoftheleftTC.Accordingtothefullvorticityequation,thehorizontalvorticityconvertedintotheverticalvorticitynearthemaximumwindspeedcenterbelow850hPalevel,andtheperiodofmostintenseconversionwasconsistentwiththeintensificationperiodofTC,whilethevorticityadvectionwasagainsttheintensification.Theverticalvorticityconvertedintothehorizontalvorticityfrom800hPato600hPa,andthewindspeeddecreasedabovethemaximumwindspeedregionatlowlevels.

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  • 简介:在当螺线部分导致铁电体极化时,沿着圆锥形的轴的旋转部件形成磁化的地方,圆锥形的旋转顺序与固有的磁电的联合拥有multiferroicity。蒙特卡罗模拟用古典海森堡尖晶石表现了(AB2O4)模型揭示一份多重圆锥形的旋转订单,即,有A上的不同的锥角度和波长的三调整地点和二个交替的B地点。旋转顺序不仅作为扎根的状态存在而且在一个更大的参数区域稳定地局部地幸存。整个存在范围能被anisotropy有效地扩展盖住CoCr2O4和MnCr2O4。多重圆锥形的旋转顺序被挫折和anisotropy很好在整个存在范围上维持并且细微地调节了,并且磁性并且铁电体性质相应地被影响。

  • 标签: 磁各向异性 尖晶石结构 自旋 稳定 HEISENBERG 蒙特卡洛仿真
  • 简介:Weexperimentallyreportonthegenerationofsingleandmultipledissipativesolitonvianonlinearpolarizationrotationtechnique.Thespectrumofthemode-lockeddissipativesolitonexhibitstypicalsteepedgeswithaflattop;thepulsedurationis10.07ps.Itisfoundthatwiththepumppowerincreasingfrom110mWto161mW,thetopofthemode-lockedspectrumbecomesflaterandthe3-dBspectralbandwidthisbroadened,whichindicatesthatthegain-dispersioneffectisloweredunderstrongerpump.However,thefullbandwidthofthespectrumisnarrowed,whichprovesthatthespectralfiltereffectincreasesandovercomestheeffectofself-phasemodulationinducedspectralbroadening.Suchaphenomenonwasnotnoticednorreportedbefore.Ourexperimentalsodemonstratesthatthepulseintervalishighlydependentontheinputpumppower:withpumppowerincreasing,thepulseintervaltendstowardsmoreuniform.Soourobservationqualitativelyanalyzestherelationshipbetweenmode-lockedpulsecharacteristicsandinputpumppower.

  • 标签: 掺铒光纤激光器 孤子 耗散 泵浦功率 脉冲间隔 3DB带宽
  • 简介:Thesurface-relatedmultipleelimination(SRME)methodisbasedonfeedbackformulationandhasbecomeoneofthemostpreferredmultiplesuppressionmethodsused.However,somedifferencesareapparentbetweenthepredictedmultiplesandthoseinthesourceseismicrecords,whichmayresultinconventionaladaptivemultiplesubtractionmethodsbeingbarelyabletoeffectivelysuppressmultiplesinactualproduction.ThispaperintroducesacombinedadaptivemultipleattenuationmethodbasedontheoptimizedeventtracingtechniqueandextendedWienerfiltering.ThemethodfirstlyusesmultiplerecordspredictedbySRMEtogenerateamultiplevelocityspectrum,thenseparatestheoriginalrecordtoanapproximateprimaryrecordandanapproximatemultiplerecordbyapplyingtheoptimizedeventtracingmethodandshort-timewindowFKfilteringmethod.AfterapplyingtheextendedWienerfilteringmethod,residualmultiplesintheapproximateprimaryrecordcanthenbeeliminatedandthedamagedprimarycanberestoredfromtheapproximatemultiplerecord.ThismethodcombinestheadvantagesofmultipleeliminationbasedontheoptimizedeventtracingmethodandtheextendedWienerfilteringtechnique.Itisanidealmethodforsuppressingtypicalhyperbolicandothertypesofmultiples,withtheadvantageofminimizingdamageoftheprimary.Syntheticandfielddatatestsshowthatthismethodproducesbettermultipleeliminationresultsthanthetraditionalmulti-channelWienerfiltermethodandismoresuitableformultipleeliminationincomplicatedgeologicalareas.

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  • 简介:Weobservedthecharacteristicsofwhitematterfibersandgraymatterinmultiplesclerosispatients,toidentifychangesindiffusiontensorimagingfractionalanisotropyvaluesfollowingwhitematterfiberinjury.Weanalyzedthecorrelationbetweenfractionalanisotropyvaluesandchangesinwhole-braingraymattervolume.Theparticipantsincluded20patientswithrelapsing-remittingmultiplesclerosisand20healthyvolunteersascontrols.Allsubjectsunderwentheadmagneticresonanceimaginganddiffusiontensorimaging.Ourresultsrevealedthatfractionalanisotropyvaluesdecreasedandgraymattervolumeswerereducedinthegenuandspleniumofcorpuscallosum,leftanteriorthalamicradiation,hippocampus,uncinatefasciculus,rightcorticospinaltract,bilateralcingulategyri,andinferiorlongitudinalfasciculusinmultiplesclerosispatients.Graymattervolumesweresignificantlydifferentbetweenthetwogroupsintherightfrontallobe(superiorfrontal,middlefrontal,precentral,andorbitalgyri),rightparietallobe(postcentralandinferiorparietalgyri),righttemporallobe(caudatenucleus),rightoccipitallobe(middleoccipitalgyrus),rightinsula,rightparahippocampalgyrus,andleftcingulategyrus.Thevoxelsizesofatrophicgraymatterpositivelycorrelatedwithfractionalanisotropyvaluesinwhitematterassociationfibersinthepatientgroup.Thesefindingssuggestthatwhitematterfiberbundlesareextensivelyinjuredinmultiplesclerosispatients.Themainareasofgraymatteratrophyinmultiplesclerosisarethefrontallobe,parietallobe,caudatenucleus,parahippocampalgyrus,andcingulategyrus.Graymatteratrophyisstronglyassociatedwithwhitematterinjuryinmultiplesclerosispatients,particularlywithinjurytoassociationfibers.

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  • 简介:在吵闹的环境的讲话情感识别(重量的单位)是在人工智能(AI)的一个重要问题。在这份报纸,讲话样品的重建移开增加的噪音。从重建的样品提取的声学的特征被选择与更好感情的recognizability造一个最佳的特征子集。一多重核(MK)半明确的编程(SDP)解决的支持向量机器(SVM)分类器在重量的单位被采用过程。在这份报纸的建议方法在感情的讲话的柏林数据库上被表明。原版的识别精确性,吵闹,并且重建的样品由两个分类单个核(SK)并且MK分类器被比较并且分析。当噪音存在时,试验性的结果证明建议方法有效、柔韧。

  • 标签: 语音数据库 情感识别 样本 多核 支持向量机分类器 噪声环境
  • 简介:Withtheincreasingofdetectionabilityofpassivesonar,theweaksignaldetectionprobleminmultipleinterferencesbecomesmoreandmoreimportant.Inthetime/bearingrecord(TBR)displayofsonardetection,whenthereexisttracesofmultipleinterferences,theidentificationofweaksignalisdifficultorimpossible.Theadaptivenoisecancellationtechniqueprovidesthetheoreticalbasisforsuppressingstronginterferences.Butthesolutionforfindingthesteady-stateoptimumfiltermatrixisquitedifficultduetotherealtimecalculationofinversematrixofinputdatacorrelationmatrix.Theiterativeinversebeamforming(IBF)algorithmforsolvingtheoptimumfiltervector,whichisexpressedbyinversematrixoftheoceanenvironmentdata,isderivedinthispaper,bywhich,theoptimumfiltercanbeeventuallyexpressedasasumofseriessimplematricesofconstructedfromsensordata.Basedonthealgorithmproposedinthispaper,someexamplesofatseaexperimentareprovided.Thestronginterferencesarecancelledandtheweaksignalisemerged,evenitdidn'tappearintheconventionalbeamforming(CBF)processing.

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  • 简介:Inthisarticle,westudythefollowingnonhomogeneousSchr¨odinger-Poissonequations-?u+λV(x)u+K(x)φu=f(x,u)+g(x),x∈R~3,?-?φ=K(x)u~2,x∈R~3,whereλ>0isaparameter.UndersomesuitableassumptionsonV,K,fandg,theexistenceofmultiplesolutionsisprovedbyusingtheEkeland'svariationalprincipleandtheMountainPassTheoremincriticalpointtheory.Inparticular,thepotentialVisallowedtobesignchanging.

  • 标签: POISSON方程 非齐次 SCHRODINGER EKELAND变分原理 多解 解的存在性
  • 简介:瓷电的设备(小便)例如当前的变压器,是批评的在过去的地震期间驱动供应系统,而是它的地震表演一直不是令人满意的。这份报纸学习小便的二种典型类型的地震表演并且基于多重调节集体dampers(MTMD)为小便建议一个抑制方法。抑制包含三个集体单位的设备的MTMD,把一个三元组称为调节质量更潮湿(TTMD),被设计并且生产。通过饮料桌子测试和有限元素分析,PEE的动态特征被学习,抑制方法的MTMD的有效性被验证。到抑制效率的MTMD冗余的质量的不利影响被学习,相关方程被导出。MTMD坚韧性通过调整TTMD控制频率被验证。当山峰地面加速远超过设计价值时,TTMD的抑制有效性被学习。两饮料桌子测试和有限元素分析显示MTMD在attenuating小便有效、柔韧地震回答。当PGA远超过设计价值时并且当控制偏差被考虑时,TTMD仍然保持有效。

  • 标签: 当前的变压器 抑制 瓷电的设备 有限元素分析 多重调节集体 dampers 摇桌子测试
  • 简介:无人的天线车辆(UAV)遥远的成像被坏天气影响,并且获得的图象有低对比的劣势,复杂质地并且变模糊。在这份报纸,我们基于多重散布建议一个盲目deconvolution模型空气点传播功能(APSF)评价到恢复遥感图象。根据Narasimhan分析理论,一个新多重散布恢复模型基于改进二色的模型被建立。然后使用L0标准到估计APSF污迹核的坡度和黑暗隧道的稀少的priors,快Fourier变换被用来由过滤的维纳恢复原来的清楚的图象。由与另外的最先进的方法作比较,建议方法能正确地估计污迹核,有效地移开大气的降级现象,保存图象详细信息并且增加优秀评估索引。

  • 标签: 退化图像 遥感图像 多重散射 核估计 无人机 大气
  • 简介:MultipleresonantexcitationsofsurfaceplasmonsinagraphenestratifiedslabarerealizedbyOttoconfigurationatterahertzfrequencies.Theproposedgraphenestratifiedslabconsistsofalternatingdielectriclayersandgraphenesheets,andissandwichedbetweenaprismandanothersemi-infinitemedium.Opticalresponseandfielddistributionaredeterminedbythetransfermatrixmethodwiththesurfacecurrentdensityboundarycondition.Multipleresonantexcitationsappearontheangularreflectionspectrum,andareanalyzedtheoreticallyviathephase-matchingcondition.Furthermore,theeffectsofthesystemparametersareinvestigated.Amongthem,theFermilevelscantunethecorrespondingresonancesindependently.Theproposedconceptcanbeengineeredforpromisingapplications,includingangularselectiveormultiplexfilters,multiplechannelsensors,anddirectionaldeliveryofenergy.

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  • 简介:传染疾病爆发在过去多次发生了并且是更可能的以后发生。在这份报纸,分配并且安排的问题限制了多重、相同或非相同,当有几时,在平行采用的资源感染了区域,被考虑。一个启发式的算法,基于Shihs(1974)(2010)和Pappis和Rachaniotis算法,作为答案方法论被建议。在特定的疾病爆发的上下文实现建议方法论的一个数字例子,也就是流行性感冒,被介绍。建议方法论能具有到那些起草的意外事故计划和保健政策议程的重要价值。

  • 标签: 传染病 资源 爆发 启发式算法 模型 离散
  • 简介:Thispaperproposesagroupdecisionmakingmethodbasedonentropyofneutrosophiclinguisticsetsandgeneralizedsinglevaluedneutrosophiclinguisticoperators.Thismethodisappliedtosolvethemultipleattributegroupdecisionmakingproblemsundersinglevaluedneutrosophicliguisticenvironment,inwhichtheattributeweightsarecompletelyunknown.First,theattributeweightsareobtainedbyusingtheentropyofneutrosophiclinguisticsets.Thenthreegeneralizedsinglevaluedneutrosophiclinguisticoperatorsareintroduced,includingthegeneralizedsinglevaluedneutrosophiclinguisticweightedaveraging(GSVNLWA)operator,thegeneralizedsinglevaluedneutrosophiclinguisticorderedweightedaveraging(GSVNLOWA)operatorandthegeneralizedsinglevaluedneutrosophiclinguistichybridaveraging(GSVNLHA)operator,andtheGSVNLWAandGSVNLHAoperatorsareusedtoaggregateinformation.Furthermore,similaritymeasurebasedonsinglevaluedneutrosophiclinguisticnumbersisdefinedandusedtosortthealternativesandobtainthebestalternative.Finally,anillustrativeexampleisgiventodemonstratethefeasibilityandeffectivenessofthedevelopedmethod.

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